﻿/*
 * Copyright 2008 Lucifer Lu
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System.Collections.Generic;

namespace SilverChart {
    public class WidgetsManager {
        private static List<ChartWidget> _componentGroup;

        static WidgetsManager() {
            _componentGroup = new List<ChartWidget>();
        }

        public static void AddComponent(ChartWidget component) {
            _componentGroup.Add(component);
        }

        public static IList<ChartWidget> GetAllComponents() {
            return _componentGroup.AsReadOnly();
        }

        public static IList<T> GetCompatibleComponents<T>() where T : ChartWidget {
            List<T> compatibleComponents = new List<T>();
            foreach (ChartWidget component in _componentGroup) {
                if (component is T) {
                    compatibleComponents.Add((T)component);
                }
            }
            return compatibleComponents.AsReadOnly();
        }
    }
}
